Results 1 to 10 of about 18,336 (100)

Investigating the Dominant Environmental Quenching Process in UVCANDELS/COSMOS Groups

The Astrophysical Journal, 2023
We explore how the fraction of quenched galaxies changes in groups of galaxies with respect to the distance to the center of the group, redshift, and stellar mass to determine the dominant process of environmental quenching in 0.2 < z < 0.8 groups.
Bonnabelle Zabelle, Claudia Scarlata, Vihang Mehta, Harry I. Teplitz, Marc Rafelski, Xin Wang, Ben Sunnquist, Laura Prichard, Norman Grogin, Anton Koekemoer, Rogier Windhorst, Michael Rutkowski, Anahita Alavi, Nima Chartab, Christopher J. Conselice, Y. Sophia Dai, Eric Gawiser, Mauro Giavalisco, Pablo Arrabal Haro, Nimish Hathi, Rolf A. Jansen, Zhiyuan Ji, Ray A. Lucas, Kameswara Mantha, Bahram Mobasher, Robert W. O’Connell, Brant Robertson, Zahra Sattari, L. Y. Aaron Yung, Romeel Davé, Duilia DeMello, Mark Dickinson, Henry Ferguson, Steven L. Finkelstein, Matt Hayes, Justin Howell, Sugata Kaviraj, John W. Mackenty, Brian Siana   +38 more
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Scaling Properties of Galaxy Groups

Universe, 2021
Galaxy groups and poor clusters are more common than rich clusters, and host the largest fraction of matter content in the Universe. Hence, their studies are key to understand the gravitational and thermal evolution of the bulk of the cosmic matter ...
Lorenzo Lovisari, Stefano Ettori, Massimo Gaspari, Paul A. Giles   +3 more
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Galaxy Populations in Groups and Clusters: Evidence for a Characteristic Stellar Mass Scale at M ∗ ∼ 109.5 M ⊙

The Astrophysical Journal, 2023
We use the DR9 of the DESI legacy imaging survey and SDSS galaxy groups to measure the conditional luminosity function (CLF) for groups with halo mass M _h ≥ 10 ^12 M _⊙ and redshift 0.01 ≤ z ≤ 0.08, down to a limiting r -band magnitude of M _r = −10 to −
Jiacheng Meng, Cheng Li, H. J. Mo, Yangyao Chen, Zhen Jiang, Lizhi Xie   +5 more
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Bent It Like FRs: Extended Radio AGN in the COSMOS Field and Their Large-Scale Environment

Galaxies, 2021
A fascinating topic in radio astronomy is how to associate the complexity of observed radio structures with their environment in order to understand their interplay and the reason for the plethora of radio structures found in surveys. In this project, we
Eleni Vardoulaki, Franco Vazza, Eric F. Jiménez-Andrade, Ghassem Gozaliasl, Alexis Finoguenov, Denis Wittor   +5 more
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Properties of Fossil Groups of Galaxies

Universe, 2021
We review the formation and evolution of fossil groups and clusters from both the theoretical and the observational points of view. In the optical band, these systems are dominated by the light of the central galaxy.
J. Alfonso L. Aguerri, Stefano Zarattini
doaj   +1 more source

The RESOLVE and ECO Gas in Galaxy Groups Initiative: The Group Finder and the Group H i–Halo Mass Relation

The Astrophysical Journal, 2023
We present a four-step group-finding algorithm for the Gas in Galaxy Groups (G3) initiative, a spin-off of the z ∼ 0 REsolved Spectroscopy Of a Local VolumE (RESOLVE) and Environmental COntext (ECO) surveys.
Zackary L. Hutchens, Sheila J. Kannappan, Andreas A. Berlind, Mehnaaz Asad, Kathleen D. Eckert, David V. Stark, Derrick S. Carr, Ella R. Castelloe, Andrew J. Baker, Kelley M. Hess, Amanda J. Moffett, Mark A. Norris, Darren Croton   +12 more
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Environmental Dependence of the Mass–Metallicity Relation in Cosmological Hydrodynamical Simulations

The Astrophysical Journal, 2023
We investigate the environmental dependence of the gas-phase metallicity for galaxies at z = 0 to z ≳ 2 and the underlying physical mechanisms driving this dependence using state-of-the-art cosmological hydrodynamical simulations.
Kai Wang, Xin Wang, Yangyao Chen
doaj   +1 more source

Simulating Groups and the IntraGroup Medium: The Surprisingly Complex and Rich Middle Ground between Clusters and Galaxies

Universe, 2021
Galaxy groups are more than an intermediate scale between clusters and halos hosting individual galaxies, they are crucial laboratories capable of testing a range of astrophysics from how galaxies form and evolve to large scale structure (LSS) statistics
Benjamin D. Oppenheimer, Arif Babul, Yannick Bahé, Iryna S. Butsky, Ian G. McCarthy   +4 more
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The Origin of Intergalactic Light in Compact Groups of Galaxies

Universe, 2021
We investigate the origin of intergalactic light (IGL) in close groups of galaxies. IGL is hypothesized to be the byproduct of interaction and merger within compact groups.
Mark J. Henriksen
doaj   +1 more source

Somewhere in between: Tracing the Radio Emission from Galaxy Groups (or Why Does the Future of Observing Galaxy Groups with Radio Telescopes Look Promising?)

Galaxies, 2021
Galaxy groups constitute the most common class of galaxy systems in the known Universe, unique in terms of environmental properties. However, despite recent advances in optical and infrared observations as well as in theoretical research, little is known
Błażej Nikiel-Wroczyński
doaj   +1 more source